package com.ruoyi.web.controller.common;


import com.ruoyi.common.config.RuoYiConfig;

import com.ruoyi.common.constant.Constants;

import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUtils;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.MediaType;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletResponse;


/**
 * 验证码操作处理
 * 
 * @author ruoyi
 */
@RestController
public class ResourceController
{

    private static final Logger log = LoggerFactory.getLogger(ResourceController.class);
    /**
     * 本地资源通用下载
     */
    @GetMapping("/downloadResource")
    public void downloadResource(String resource, HttpServletResponse response)
            throws Exception
    {
        try
        {
            if (!FileUtils.checkAllowDownload(resource))
            {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        }
        catch (Exception e)
        {
            log.error("下载文件失败", e);
        }
    }
}
